Overview
*The Surface Rockwell Hardness Tester is a type of Rockwell hardness tester that uses smaller test forces. It is used for testing fine, small, and thin specimens that cannot be tested by standard Rockwell hardness testers, workpieces with surface-hardened layers, and workpieces requiring minimal indentation. It can be used for batch product inspection, replacing small-load Vickers hardness testers.
*Testing range includes low-hardness pure aluminum, lead, tin, gold, silver; medium-hardness aluminum alloys, copper, copper alloys, stainless steel, cold-rolled steel plate, tinplate; and high-hardness thin hard steel sheets, carburized and nitrided steel, surface-hardened steel, etc.
* There are three models of the instrument, with maximum specimen sizes of 25mm, 50mm, and 100mm, respectively.
* Due to the very small indentation, it has no impact on the use of most workpieces and can be used as a non-destructive testing method to directly test workpieces.
*The measured Surface Rockwell hardness values can be converted into commonly used Rockwell (HRB, HRC), Brinell (HB), Vickers (HV) hardness values, or tensile strength (σb) values through conversion tables.
Technical Specifications
Hardness Scales: Surface Rockwell 15N, 30N, 45N, 15T, 30T, 45T, 15W, 30W, 45W, 15X, 30X, 45X, 15Y, 30Y, 45Y, etc., 15 scales in total
Test Forces: Initial test force 3kg
Total test forces 15kg, 30kg, 45kg Accuracy: Complies with standards GB/T230, ISO6508, ASTM E18
Resolution: 0.5HR
Weight: 1.5kg
Opening Width: 100mm (4 inches)
Opening Depth: 100mm (4 inches)
Specimen Dimensions: Sheet thickness: 0.15mm-100mm
Pipe thickness: 0.15mm-90mm
Pipe inner diameter: >30mm (direct testing)
Pipe inner diameter: >10mm (sampling testing)
Wire diameter: 2mm-22mm
Sphere diameter: 2mm-20mm
Standard Configuration
Main Unit: 1 unitFlat Anvil: 1 unit
Support Base: 1 unitV-Type Anvil: 1 unit
Diamond Indenter: 1 piece (120° cone) Point Anvil: 1 unit
Steel Ball Indenter: 2 pieces (Ø1.588mm)Extension Rod: 1 unit
Standard Hardness Blocks: 4 blocks Instrument Case: 1 unit
Optional Accessories
Steel Ball Indenter: Ø3.175mm, Ø6.35mm, Ø12.7mm
Diamond Point Anvil: For thin sheet materials with thickness 0.05mm-0.6mm, such as "tinplate"
Slender Anvil: Ø1.5mm×11mm, Ø2.0mm×11mm, Ø3.0mm×11mm, for small stamped parts and workpieces with very small support surfaces
Small Ball Anvil: For testing steel balls with diameter Ø2-18mm
Fine Shaft Anvil: For testing fine shafts and wires with diameter Ø2-22mm
Instrument Selection
The model numbers of the PHR series hardness testers are determined based on the instrument's maximum opening size and the classification of Rockwell/Surface Rockwell hardness testers. The number following "PHR-" indicates the opening size (in inches), the letter "S" indicates a Surface Rockwell hardness tester, and the letters "ST" indicate a Tube Surface Rockwell hardness tester. Users can select the appropriate instrument model based on the size of the test specimen.
